Sensorless operation of surface mount permanent magnet AC (PMAC) motors
A sensorless field oriented control scheme for surface mount permanent magnet ac (PMAC) motor with split phase stator windings is presented. This motor is obtained by splitting the phase windings of a conventional three phase motor. The six-phase motor, however is run as a three-phase motor by connecting the split phase stator windings in series, while the taps are made available for voltage measurements. By measuring the terminal voltages and the line currents, absolute position of the permanent magnet ac motor driven by a current regulated PWM inverter with a hysteresis controller is estimated. The estimated position information is independent of the stator resistance, thus this scheme is even applicable at low speeds. Results are presented to show the effectiveness of the new controller, and it is also shown that the position error is negligible.
- Research Organization:
- Texas A and M Univ., College Station, TX (US)
- OSTI ID:
- 20080369
- Journal Information:
- IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers), Vol. 14, Issue 4; Other Information: PBD: Dec 1999; ISSN 0018-9383
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sensorless velocity control of permanent-magnet synchronous motors
Indirect sensing for rotor flux position of permanent magnet AC motors operating over a wide speed range